HC_APTBS/Views/UserControls/AutoTestSnackbarView.xaml.cs

using System;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Threading;
using HC_APTBS.ViewModels.Dialogs;

namespace HC_APTBS.Views.UserControls
{
    /// <summary>
    /// Shell-level snackbar that mirrors <see cref="UnlockSnackbarView"/> but binds to
    /// <see cref="AutoTestProgressViewModel"/>. Auto-dismisses three seconds after a
    /// successful run; a failed or cancelled run stays until the operator clicks Dismiss.
    /// </summary>
    public partial class AutoTestSnackbarView : UserControl
    {
        private DispatcherTimer? _autoHideTimer;

        public AutoTestSnackbarView()
        {
            InitializeComponent();
            DataContextChanged += OnDataContextChanged;
        }

        private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (e.OldValue is AutoTestProgressViewModel oldVm)
                oldVm.PropertyChanged -= OnVmPropertyChanged;

            if (e.NewValue is AutoTestProgressViewModel newVm)
                newVm.PropertyChanged += OnVmPropertyChanged;
        }

        private void OnVmPropertyChanged(object? sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName != nameof(AutoTestProgressViewModel.IsSuccess)) return;
            if (DataContext is not AutoTestProgressViewModel vm) return;

            if (vm.IsSuccess == true)
            {
                _autoHideTimer?.Stop();
                _autoHideTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(3) };
                _autoHideTimer.Tick += (_, _) =>
                {
                    _autoHideTimer!.Stop();
                    if (vm.CloseCommand.CanExecute(null))
                        vm.CloseCommand.Execute(null);
                };
                _autoHideTimer.Start();
            }
        }

        private void OnDismissClick(object sender, RoutedEventArgs e)
        {
            if (DataContext is AutoTestProgressViewModel vm && vm.CloseCommand.CanExecute(null))
                vm.CloseCommand.Execute(null);
        }
    }
}